EP-NSI is required to use any Hydrophobia rain covers with flagship Nikon DSLR cameras that have screw in eyepieces such as D2x, D2Hs, D3, etc.
Hydrophobia 300-600 V2.0
Hydrophobia Flash 70-200
Custom computer numerically controlled (CNC) machined Delrin eyepiece with high density foam padding.
No Rhetoric Warranty
on all Think Tank products